[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/10/19/art.obamapolls.ap.jpg caption="Obama holds an advantage in several key battlegrounds."](CNN) - A string of new state polls suggests Barack Obama still holds an advantage in several key battleground states, and is within single digits in a state that has voted Republican in the last two presidential elections.
New CNN poll of polls in three swing states - Ohio, Wisconsin, and Minnesota - show the Illinois senator with a lead, while a new poll in West Virginia puts John McCain ahead.
In Ohio, the latest CNN poll of polls shows Obama with a 1 point lead over McCain, 47 to 46 percent while the Illinois senator has a 13 point lead in a Wisconsin poll of polls and a 8 point lead in a Minnesota poll of polls.
Both Minnesota and Wisconsin voted for John Kerry in 2004 while Ohio has gone to the Republicans in the last two elections.
Meanwhile, a new NBC/Mason Dixon survey of West Virginia voters has John McCain with a 6 point lead there, 47-41 percent. It's a considerably smaller gap than the 13-point margin of victory President Bush garnered there in 2004.
Obama campaign manager David Plouffe said in a taped-message to supporters Sunday that the campaign will be pouring resources into West Virginia during the final two weeks of the presidential race in hopes of turning it blue.